Gabapentin (Neurontin) is an anticonvulsant used for treating seizures and nerve pain (usually caused by herpes zoster).It can be also a drug of choice for restless legs syndrome (RLS), migraines, hot flashes, anxiety disorders, etc. Blood pressure changes. Peripheral edema. The more common side effects of gabapentin include: abnormal eye movements that are continuous, uncontrolled, back-and-forth, or rolling ; clumsiness or unsteadiness A list of all these side effects that may occur in your body is given below: Drowsiness – The most common side effect to be reported by the patients is drowsiness after the use of Gabapentin. This was a generally well-conducted review. Serious side effects of Neurontin include weight gain, joint pain, motion sickness, blurred vision, and viral infection. Weight gain is surprisingly common among people taking Lyrica. Lynn in Mobile, Alabama, warns about weight gain from gabapentin (she isn’t the only one): “I have been on gabapentin (800 mg 3 x daily) for about 13 years. Serious long-term effects are possible when taking gabapentin and may include: 1,4. Gabapentin is an anticonvulsant medication that doctors often prescribe to prevent seizures in people with epilepsy. Other side effects of Neurontin include mood or behavior changes, depression, or anxiety. You should seek medical attention right away by calling 911. Factors Leading To Weight Gain With Gabapentin Temporary amnesia. Fatigue: A common side effect of Gabapentin, fatigue can result to engaging in less physical activities. Weight gain. This can be excruciating nerve pain that continues after a shingles attack. Abdominal pain. Blurred vision. Antiepileptic medications including gabapentin have been associated with an increased risk of suicidal thinking and behavior. However I haven’t heard that people can have problems with eight gain from this medication. Dosage for Neurontin In adults with postherpetic neuralgia , Neurontin may be initiated on Day 1 as a single 300 mg dose, on Day 2 as 600 mg/day (300 mg two times a day), and on Day 3 as 900 mg/day (300 mg three times a day). If these side effects begin to occur, it is likely that you are allergic to gabapentin. The authors concluded that there was strong evidence that gabapentin and pregabalin could reduce pain, improve sleep and improve health related quality of life for patients with fibromyalgia syndrome. Tremors. But it’s an unfortunate side effect of many common medications. An unexpected increase in weight can be concerning for anyone. Drug interactions of Neurontin include antacids and morphine. What are the Most Serious Side Effects of Gabapentin? It is generally safe but can cause some side effects… Slower Metabolism: Along with the decrease in glutamate, an increase in GABA reduces physiological arousal which in turn leads to weight gain. Does Gabapentin Cause Weight Gain As A Side Effect? However, Gabapentin has a number of side effects that can cause weight gain in the patients. Anxiety. Aggression. Common side effects of gabapentin are joint pain, motion sickness, pneumonia, fatigue, ataxia, dizziness, nausea, hypertension and vomiting. A similar drug, gabapentin, has been approved for treating epilepsy and postherpetic neuralgia. In addition, gabapentin may cause other serious side effects, including rashes, hives, itching, swelling of the face, throat, tongue, lips, or mouth, hoarseness, or problems swallowing and breathing. These “gabapentinoids” can cause a large number of side effects. 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